Leslie Thorne was an accountant, of auto racing in his spare time a day job - it primarily mountain race - played in his native Scotland. Thorne filled his weekends back in the 1930s with this employment. After the Second World War, he took over the running around again.
He drove Formula 3 race with a Cooper - Norton and showed a strong performance in 1953 so that he David Murray, the Scottish racing driver and owner of Ecurie Ecosse, a Formula 2 racing cars offered.
Thorne played with the Connaught Type A the Grand Prix of Great Britain 1954 in Silverstone. At the finish Thorne had 12 laps behind the winner José González Froilán on a Ferrari 625F1 and was not scored. Thorne also drove some races in Formula Libre with the best placement in the Chichester Cup at Goodwood.